One Piece: Kaido's adopted son, starts with the Eight Gates Formation.

"He understood."

Whitebeard grinned with satisfaction: "Gurararara... That idiot has finally learned to fight with his brain."

Kaido looked at his jet-black fist and thought: This feeling...that's it. This is what that brat has been trying to teach me. Not techniques, not skills, but infusing my will—my domineering spirit—into every punch.

He looked up at Yhwach.

"Come on," Kaido said. "From this punch onwards, I'm getting serious."

Yhwach sensed the change.

The aura emanating from the enormous dragon-man opposite them had changed. Before, it was a raging, uncontrolled torrent of power, like a wild beast that only knew how to rampage.

But now—

That force subsided.

It hasn't become weaker; rather, it has become more focused and purer.

It's like a swollen river being diverted into a narrow channel; the pressure is actually greater.

Yhwach's combat instincts were frantically raising alarms.

"Interesting," he muttered to himself, then took the initiative.

He was faster than before—the power of the son of the Spirit King was pushed to a higher level, black lines spread from the surface of his skin to his face, and the triple cross-shaped pupils in his eyes began to rotate.

His right fist, imbued with the concentrated power of the Soul King, hurtled straight towards Kaido's face.

Kaido also threw a punch.

His right fist, covered in a jet-black color, had no fancy movements; it was just a simple straight punch.

The two fists collided.

There was no shockwave this time.

The surrounding space distorted at the point of collision—not shattering, not collapsing, but an absolute clash between two “wills” at that point.

Yhwach's arms were trembling.

Kaido's arm was also trembling.

But Kaido was laughing.

Because he felt it—for the first time, his fist truly, completely, and without reservation conveyed his will.

Previously, his attacks were an overwhelming force on the level of "strength".

But this punch was a crushing blow on the level of "will".

The essence of Conqueror's Haki is not arrogance or the release of domineering aura—it is the embodiment of the belief that "I am the king." It is the will to make the world submit to you.

What is Kaido's will?

It is the "world's strongest creature".

It is the "King of Beasts".

He is a monster who has been fighting since birth and has spent his whole life pursuing the strongest.

This fist, formed from concentrated will, directly overwhelmed Yhwach's Soul King power at the moment of impact.

click-

Yhwach broke his wrist.

"!"

Yhwach's pupils contracted sharply, and he immediately used his other hand to gather spiritual energy for defense, but Kaido's second punch had already arrived.

The punch landed on Yhwach's chest.

The power of Conqueror's Haki pierced Yhwach's body like a steel nail, not causing physical damage, but directly impacting his "will"—his pride as the son of the Soul King, his belief in ruling all things, and his self-perceived imperial aura that placed him above all others.

Yhwach was sent flying backward, crashing through three remaining walls.

A trickle of blood seeped from the corner of his mouth as he stood up from the rubble.

He licked away the trace of blood with his tongue, his expression calm, but the light in his eyes became even more dangerous.

"I see. Your 'domineering aura'... is a power at the level of will."

Kaido did not give chase.

It wasn't that he didn't want to, but he also needed to process the feedback from that punch.

His right hand was trembling slightly—the Conqueror's Haki coverage was not yet stable enough. Although the punch had landed, it had also put a considerable strain on his body.

"Yeah, that's roughly the idea." Kaido cracked his knuckles. "But I just learned it, so I'm not very proficient yet."

Yhwach remained silent for two seconds after hearing this.

Then he did something that surprised everyone.

He smiled.

It wasn't the condescending sneer from before, but a... almost pleasurable laugh.

"I have lived for thousands of years and defeated countless enemies. The last person to make me bleed was Yamamoto Genryusai, a thousand years ago."

He reached up and wiped the blood from the corner of his mouth, his voice low and powerful.